Macro-sight adjustment



Nov. 24, 1959 w. o. PETTY MACRO-SIGHT ADJUSTMENT 2 Sheets-Sheet 1 FiledOct. 17, 1957 William 0. Perry JNVIIN'IYJR Nov. 24, 1959 w. o. PETTYMACRO-SIGHT ADJUSTMENT 2 Sheets-Sheet 2 Filed Oct. 17, 1957 7 I L I If II III I Will/am 0. Perry 1N VENTOR 40%.

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United States Patent MACRO-SIGHT ADJUSTMENT William 0. Petty, Sulphur,La., assignor of ten percent to Joseph J. Regan and twenty percent toGeorge Isaac, both of Sulphur, La.

Application October 17, 1957, Serial No. 690,734

4 Claims. (Cl. 33-50) This invention relates to a gunsight adapted forvarious types of weapons and instruments such as firearms, rangefinders, testing equipment, cameras, and surveying equipment.

The primary object of the present invention resides in the provision ofa novel gunsight having incorporated therein means for simply andaccurately adjusting the gunsight for targets at varying distances.

A further object of the present invention resides in the provision of agunsight having means whereby a sportsman can continue looking at thetarget through the gunsight while adjusting it for greater or lesserrange.

The construction of this invention features a gunsight having mountedtherein a reticule slide which is controlled by the position of arotatable cam which raises or lowers the reticule slide to raise orlower the cross hairs of the slide.

Still further objects and features of this invention reside in theprovision of a gunsight that is simple in construction, capable of beingeasily installed on various conventional weapons, such as firearms andrelatively short range, heavy weapons such as mortars or the like, whichis capable of being easily adjusted and which has incorporated thereinmeans for indicating to the sportsman peering through the gunsight theprecise range to which the gunsight is adjusted.

These, together with the various ancillary objects and features of theinvention which will become apparent as the following descriptionproceeds, are attained by this gunsight, preferred embodiments of whichhave been illustrated in the accompanying drawings, by way of exampleonly, wherein:

Figure 1 is a perspective view of one form of the gunsight comprisingthe present invention;

Figure 2 is an enlarged longitudinal sectional view of the gunsight astaken along the plane of line 22 in Figure 1;

Figure 3 is a transverse sectional view in an enlarged scale as takenalong the plane of line 33 in Figure 2;

Figure 4 is an enlarged sectional detail view illustrating the means foradjusting the reticule cross hair indicia and the reticule construction;

Figure 5 is a transverse sectional detail view on an enlarged scale astaken along plane of line 55 in Figure 2;

Figure 6 is an exploded perspective view illustrating the constructionof the reticule slide and slide holder;

Figure 7 is an elevational view of a modified form of the inventionshown mounted on a portion of a firearm; and

Figure 8 is a sectional detail view in an enlarged scale of the modifiedform of the invention.

With continuing reference to the accompanying drawings wherein likereference numerals designate similar parts throughout the various views,the reference numeral 10 generally designates the gunsight comprisingthe pres ent invention, which is adapted to be mounted on a hand weapon,as indicated at 12, or any other suitable appa- 2,913,826 Patented Nov.24, 1959 ratus by means of mounts such as the brackets indicated at 14or by any other suitable means. The tube 10 is provided with a threadedend, as at 18, threadedly receiving a lens holder 20 which holds lenses22 and 24 in position within the elongated tube 26 of the gunsight 10,with the lenses 22 and 24 being held in spaced relationship by means ofa lens spacer 28. Another lens 30 is mounted at the opposite end of thetube 26 and held in place by a knurled elevational adjustment ring 32which is threadedly engaged on the threaded end 34 of an inner hollowcylinder 36 which is received as an inner sleeve within the tube 10conforming generally to the contours of the tube 10 and which is lockedagainst axial displacement by means of fasteners as are indicated at 38and 40. Further holding the lens 30 in place is a lens spacer ring 42.It is to be recognized that as the adjusting ring 32 is rotated, thecylinder 36 will likewise be rotated. The cylinder 36 has fixed theretoan elevation cam 44. The elevation cam 44 has an eccentric outer surface46 which can be best seen in Figure 3. This cam is rotatable with thecylinder 36.

Held in place on the tube 10 is an adjusting face housing 48 which ismaintained in the desired position not only by the fastener 38 but by afastener 50. The fastener 50 also serves to hold a slide holder 54 inposition in the tube with other fasteners, such as indicated at 56, alsoserving to hold the slide holder 54 in place, the fasteners extendingthrough four apertures indicated at 58 in the slide holder 54.

The slide holder 54 has a vertically extending groove 70 therein as wellas an aperture 72 therethrough through which the cross hairs 74 of thereticule slide 76 can be observed. The reticule slide 76 is adapted tobe constrained to vertical movement only by being seated within thegroove 70 and has a projection 72 which is provided with an internallythreaded bore 74, through which a threaded adjusting member 76 extends,the adjusting member terminating in a follower 78 adapted to engage theeccentric outer circumferential surface 46 of the cam 44. The threadedportion 76 of the follower has a shaft 80 fixedly attached thereto whichis journalled in the adjusting base housing 48 and has an adjusting knob84 attached thereto. The adjusting knob 84 has a ser rated or toothedsurface for enabling the ready rotation thereof and for engagement by apawl or detent 86 fixed to the housing whereby the adjusting knob 84 isheld in an adjusted position by the detent 86. A spring 90 isconcentrically disposed about the shaft 80 and biases the follower andthe reticule slide downwardly with the follower 78 being resilientlyengaged with the cam 44.

Attached to the cam 44 and rotatable therewith is a pointer whichcooperates with the indicia, as at 102, which indicia are mounted onmembers 104, 106, 108 and 110, each of which includes racks 112, 114,116, and 118. The racks are engaged by gears 120, 122, 124, and 126. Thegears are fixed to the fasteners holding the slide holder 54 in placeand extending through the apertures 58 and these fasteners terminate inheads which may be rotated to position the indicia 102. Thus, theindicia 102 can be placed adjacent to the cross hairs with the indicator100 pointing to the indicia representing a certain range.

In use, assuming the gunsight 10 is assembled on the weapon 12 withwindage built into the mount, the procedure for adjusting the device forelevation is initiated by adjusting the ring 32 to a zero or point onwhich a stop mounted on this member and the tube 26 come together. Then,the adjustment knob 84 is rotated until the rifle is sighted in andzeroed on a target at one hundred yards, and at this point indicia areplaced on a 'dial, as at 120, and the adjusting knob 84 held in place bythe pawl 86. The indicia 102 is then adjusted so that the pointer 104will point to the indicia 102 having the numeral 1 representing 100yards. The rifle is then carried back to the 200 yard mark and the ring32 adjusted until the rifle is zeroed in for this range and a small 2 isplaced on the dial 120 at this point. This procedure is subsequentlycarried out for various increments of ranges; It is to be noted that theextent of adjustment may be controlled by the cam surface 46. As thering 32 is rotated, the cam surface will lower, causing the follower tobe depressed, thus causing a depression of the cross hairs 74 andrequiring that the weapon be elevated to maintain the gunsight on thetarget. By use of the indicia 102, the sportsman or user of thisgunsight may readily adjust the gunsight by merely rotating the ring 32without removing his eye from the sight, and thus maintaining the sighton the target due to the coaction of the pointer and the indicia. It isheld that the indicia on the scale 120 cooperates with a pointer 122mounted on the tube 26. In lieu of this arrangement, the arrangement asis shown in Figures 7 and Scan be provided wherein a knurled knob 140 ismounted within the stock 142 of a weapon and is connected by means of aflexible cable 144 to a gear 146 which is in engagement with anothergear 148 mounted on a cylinder 150 to which a cam 44 is attached. Theother elements of the invention are identical. In this form of theinvention, maintaining his grasp on a stock, the hunter may adjust thescope for range in a convenient and highly eflicient manner.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. A gunsight comprising an elognated tube, an inner adjustment cylinderrotatably mounted in said tube and having an elevation cam securedthereto and rotatable therewith, with the elevation cam having aneccentric surface, means connected to said cylinder for rotating saidcylinder, a slide holder mounted in said tube, a reticule slidevertically slidably mounted in said slide holder, a follower engaged insaid reticule slide, said follower engaging said eccentric surface, saidreticule slide having cross hairs thereon, indicia carrying rackssecured in said tube adjustable for positioning indicia.

thereon in alignment with said cross hairs, and a pointer carried bysaid cam cooperating with said indicia, and means for adjusting saidracks from the exterior of said tube.

2. A gunsight comprising an elongated tube, an inner adjustment cylinderrotatably mounted in said tube and having an elevation cam securedthereto and rotatable 4 therewith, with the elevation cam having aneccentric outer circumferential surface, means connected to saidcylinder for rotating said cylinder, a slide holder mounted in saidtube, a reticule slide vertically slidably mounted in said slide holder,a rotary follower radial to the axis of said cam threadedly engaged insaid reticule slide to operate said slide, said follower engaging saideccentric outer circumferential surface of said cam, means engaging saidfollower resiliently urging said follower into engagement with saideccentric outer circumferential surface of said cam, and means engagingsaid follower for rotating said follower.

3. A gunsight comprising an elongated tube, an inner adjustment cylinderrotatably mounted in said tube and having an elevation cam securedthereto and rotatable therewith, with the elevation cam having aneccentric outer circumferential surface, means connected to saidcylinder for rotating said cylinder, a slide holder mounted in saidtube, a reticule slide vertically slidably mounted in said slide holder,a follower rotatably operatively connected to said reticule slide, saidfollower being radial to the axis of said cam and engaging saideccentric outer circumferential surface of said cam, said reticule slidehaving cross hairs thereon, indicia carrying racks secured in said tubeand adjustable for positioning indicia in alignment with said crosshairs, a pointer carried by said cam cooperating with said indicia,means engaging said follower resiliently urging said follower intoengagement with said eccentric outer circumferential surface of saidcam, means slidably and operatively engaging said follower for initiallyadjusting said follower and pinions in said tube meshing with said racksand operative from the exterior of said tube for adjusting said racks.

4. A gunsight comprising an elongated tube, an inner adjustment cylinderrotatably mounted in said tube and having an elevation cam securedthereto and rotatable therewith, with the elevation cam having aneccentric surface, means connected to said cylinder for rotating saidcylinder, a slide holder mounted in said tube, a reticule slidevertically slidably mounted in said slide holder, a follower engaged insaid reticule slide, said follower engaging said eccentric surface,andJenseLdisposed in said tube for providing a rnagnified image 0LReferences Cited in the file of this patent UNITED STATES PATENTSFidjeland Feb. 24, 1914 Etherington Aug. 8, 1922

